Daewoo KOM-9F2CTS, Руководство по обслуживанию

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A
POINT WAVE FORM
5. When the digital clock does not operate properly.
→
refer to Circuit Diagram
* If clock does not keep exact time, you must check resistor R20, R29, transistor Q7.
T
T: 20ms(50Hz)
5V
0V
6. Retrieving Service Information
To retrieve the oven usage history, press and hold 3 pad for 5 seconds when the door is opened.
The display will show “SERVICE” message, then you can retrieve the information by pressing a number pad as
described below.
1 TUBE HOUR Accumulated magnetron turn on hour 1 /1 hour
2 TUBE CYCLE Accumulated magnetron turn on/off times 1 /once
3 DOOR CYCLE Accumulated door open/closed times 1 /10 times
PAD NAME DECRIPTION UNIT
1 (BLANK) Open Door
2 “SERVICE” Press and hold 3 Pad for 5 seconds
3 “1024” Press 1 Pad for Tube Hours (1,024 shown)
“65536” Press 2 Pad for Tube Cycles (65,556 shown)
“131072” Press 3 Pad for Door Cycles (131,072 shown)
4 “HELLO” Close Door
STEP DISPLAY DESCRIPTION
4. When the door is opened during operation the countdown timer does not stop.
1 Replace door open monitor switch
CHECK NO METHOD REMEDY
Check the state(ON, OFF) of the door open
monitor switch by resistance measurement.
DOOR OPEN 5VDC OPEN
DOOR CLOSED GND CLOSE
POINT
A B
STATE